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Re: Mullard ECC83 help with dates!

I pretty much agree with fatbottle, except that all these likely have bare copper grid posts except the last one noted, plus there were 6 tubes listed!

f91 B8F 6/58 longplate w/halo held aloft by two legs

I61 B0L 12/60 shortplate

I61 B1G (can't be "B16") 7/61 shortplate

f92 B9D 4/59 longplate w/halo on one straight post

I63 B3K3 shortplate; actually w/o further info it could be 3rd week of 11/63 or 11/73; if copper support rods and straight rod on the halo it's 1963

I63 B7H4 ditto, except either 4th week of '67 or '77, and either would have plated grid rods not bare Cu; if the halo is welded at right angle to straight support rod it's '67.

Jeff


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